Everyone has mentioned it is ok to receive communion twice in one day.
My local Cathedral celebrates mass 5 times on a Sunday, if you went to each mass could you receive communion each time? So is there a specific limit?
Twice if you are a Latin Catholic and not a priest, or in the danger of death. A dubium on CIC Canon 917 was answered

oubt: Whether, according to canon 917, one who has already received the Most Holy Eucharist may receive it again on the same day only a second time, or as often as one participates in the celebration of the
Eucharist. Response: Affirmative to the first; negative to the second.
AAS 76, (1984) 746]
ewtn.com/expert/answers/communion_times.htm
It is more complex for Latin Catholic priests because they must receive when celebrating a Mass, which can be more than twice:
CIC Can. 905
§1. A priest is not permitted to celebrate the Eucharist more than once a day except in cases where the law permits him to celebrate or concelebrate more than once on the same day.
§2. If there is a shortage of priests, the local ordinary can allow priests to celebrate twice a day for a just cause, or if pastoral necessity requires it, even three times on Sundays and holy days of obligation.
The eastern Catholic canon law (CCEO) has no canon limiting reception and indeed, frequent daily Divine Liturgy is not normal.